exomemphiz/databases-assignment1

Simple_DB

Made by Chris Rosendorf

Information

This implementation of Simple_DB includes a HashMap in the form of a JavaScript object.
Any overwritten data stays in the database, but upon generating the HashMap, it will only index the latest change.
Any deleted data is indexed in a specific way, to ensure that it is not read into the HashMap.

Any valid JavaScript data type can be used as a key, and as the associated value in the database.
These include arrays, nested objects and primitive data types, such as numbers, strings and more.

Installation

• Clone Repository
• Ensure NodeJS is installed and working on system
• Ensure TypeScript is globally installed through npm: npm i -g typescript
• Open 1 terminal in root directory of the project, then run tsc -w (Leave it open the whole time)
• Open another terminal, first run npm i, and then run the command: npm start

Usage

Inside App.ts you can change the code to play around with the functions and functionality of the database.
There are 3 functions that can be used:

Function	Parameter
addToDB	DatabaseObject
deleteFromDB	Key: any
getFromDB	Key: any

The DatabaseObject is based on the interface:

interface DatabaseObject { key: any; value: any; }